ibrahim momoh / Mbed 2 deprecated Group10_slave

this is 1/2 of the whole project, this is the part of the slave board that has all the sensors on it, controls the rasberri pi through GPIO, gets sensor data, and sends alert messages through the nrf RF transceiver module to the master board

Dependencies:   HCSR04 mbed nRF24L01P

Fork of nRF24L01P_Hello_World by Owen Edwards

main.cpp@0:a51a6e7da590, 2011-01-19 (annotated)

Committer:
Owen
Date:
Wed Jan 19 23:26:02 2011 +0000
Revision:
0:a51a6e7da590
Child:
1:5be2682710c6
Initial revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Owen 0:a51a6e7da590 1 /**
Owen 0:a51a6e7da590 2 * @file main.cpp (nRF24L01P_Hello_World)
Owen 0:a51a6e7da590 3 *
Owen 0:a51a6e7da590 4 * @author Owen Edwards
Owen 0:a51a6e7da590 5 *
Owen 0:a51a6e7da590 6 * @section LICENSE
Owen 0:a51a6e7da590 7 *
Owen 0:a51a6e7da590 8 * Copyright (c) 2010 Owen Edwards
Owen 0:a51a6e7da590 9 *
Owen 0:a51a6e7da590 10 * This program is free software: you can redistribute it and/or modify
Owen 0:a51a6e7da590 11 * it under the terms of the GNU General Public License as published by
Owen 0:a51a6e7da590 12 * the Free Software Foundation, either version 3 of the License, or
Owen 0:a51a6e7da590 13 * (at your option) any later version.
Owen 0:a51a6e7da590 14 *
Owen 0:a51a6e7da590 15 * This program is distributed in the hope that it will be useful,
Owen 0:a51a6e7da590 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Owen 0:a51a6e7da590 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Owen 0:a51a6e7da590 18 * GNU General Public License for more details.
Owen 0:a51a6e7da590 19 *
Owen 0:a51a6e7da590 20 * You should have received a copy of the GNU General Public License
Owen 0:a51a6e7da590 21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
Owen 0:a51a6e7da590 22 *
Owen 0:a51a6e7da590 23 * The above copyright notice and this permission notice shall be included in
Owen 0:a51a6e7da590 24 * all copies or substantial portions of the Software.
Owen 0:a51a6e7da590 25 *
Owen 0:a51a6e7da590 26 * @section DESCRIPTION
Owen 0:a51a6e7da590 27 *
Owen 0:a51a6e7da590 28 * Demo the nRF24L01+ Library
Owen 0:a51a6e7da590 29 *
Owen 0:a51a6e7da590 30 * Datasheet:
Owen 0:a51a6e7da590 31 *
Owen 0:a51a6e7da590 32 * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
Owen 0:a51a6e7da590 33 */
Owen 0:a51a6e7da590 34
Owen 0:a51a6e7da590 35 #include "mbed.h"
Owen 0:a51a6e7da590 36 #include "nRF24L01P.h"
Owen 0:a51a6e7da590 37
Owen 0:a51a6e7da590 38 Serial pc(USBTX, USBRX); // tx, rx
Owen 0:a51a6e7da590 39
Owen 0:a51a6e7da590 40 nRF24L01P my_nrf24l01p(p5, p6, p7, p8, p9, p10); // mosi, miso, sck, csn, ce, irq
Owen 0:a51a6e7da590 41
Owen 0:a51a6e7da590 42 DigitalOut myled1(LED1);
Owen 0:a51a6e7da590 43 DigitalOut myled2(LED2);
Owen 0:a51a6e7da590 44
Owen 0:a51a6e7da590 45 int main() {
Owen 0:a51a6e7da590 46
Owen 0:a51a6e7da590 47 //
Owen 0:a51a6e7da590 48 // The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
Owen 0:a51a6e7da590 49 // "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
Owen 0:a51a6e7da590 50 // only handles 4 byte transfers in the ATMega code.
Owen 0:a51a6e7da590 51 //
Owen 0:a51a6e7da590 52 #define TRANSFER_SIZE 4
Owen 0:a51a6e7da590 53
Owen 0:a51a6e7da590 54 char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
Owen 0:a51a6e7da590 55 int txDataCnt = 0;
Owen 0:a51a6e7da590 56 int rxDataCnt = 0;
Owen 0:a51a6e7da590 57
Owen 0:a51a6e7da590 58 my_nrf24l01p.powerUp();
Owen 0:a51a6e7da590 59
Owen 0:a51a6e7da590 60 //
Owen 0:a51a6e7da590 61 // Display the (default) setup of the nRF24L01+ chip
Owen 0:a51a6e7da590 62 //
Owen 0:a51a6e7da590 63 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", my_nrf24l01p.getRfFrequency() );
Owen 0:a51a6e7da590 64 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
Owen 0:a51a6e7da590 65 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
Owen 0:a51a6e7da590 66 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
Owen 0:a51a6e7da590 67 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
Owen 0:a51a6e7da590 68
Owen 0:a51a6e7da590 69 pc.printf( "Type keys to test transfers:\r\n (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );
Owen 0:a51a6e7da590 70
Owen 0:a51a6e7da590 71 my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
Owen 0:a51a6e7da590 72
Owen 0:a51a6e7da590 73 my_nrf24l01p.setReceiveMode();
Owen 0:a51a6e7da590 74 my_nrf24l01p.enable();
Owen 0:a51a6e7da590 75
Owen 0:a51a6e7da590 76 while (1) {
Owen 0:a51a6e7da590 77
Owen 0:a51a6e7da590 78 //
Owen 0:a51a6e7da590 79 // If we've received anything over the host serial link...
Owen 0:a51a6e7da590 80 //
Owen 0:a51a6e7da590 81 if ( pc.readable() ) {
Owen 0:a51a6e7da590 82
Owen 0:a51a6e7da590 83 //
Owen 0:a51a6e7da590 84 // ...add it to the transmit buffer
Owen 0:a51a6e7da590 85 //
Owen 0:a51a6e7da590 86 txData[txDataCnt++] = pc.getc();
Owen 0:a51a6e7da590 87
Owen 0:a51a6e7da590 88 //
Owen 0:a51a6e7da590 89 // If the transmit buffer is full
Owen 0:a51a6e7da590 90 //
Owen 0:a51a6e7da590 91 if ( txDataCnt >= sizeof( txData ) ) {
Owen 0:a51a6e7da590 92
Owen 0:a51a6e7da590 93 //
Owen 0:a51a6e7da590 94 // Send the transmitbuffer via the nRF24L01+
Owen 0:a51a6e7da590 95 //
Owen 0:a51a6e7da590 96 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
Owen 0:a51a6e7da590 97
Owen 0:a51a6e7da590 98 txDataCnt = 0;
Owen 0:a51a6e7da590 99
Owen 0:a51a6e7da590 100 }
Owen 0:a51a6e7da590 101
Owen 0:a51a6e7da590 102 //
Owen 0:a51a6e7da590 103 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
Owen 0:a51a6e7da590 104 //
Owen 0:a51a6e7da590 105 myled1 = !myled1;
Owen 0:a51a6e7da590 106
Owen 0:a51a6e7da590 107 }
Owen 0:a51a6e7da590 108
Owen 0:a51a6e7da590 109 //
Owen 0:a51a6e7da590 110 // If we've received anything in the nRF24L01+...
Owen 0:a51a6e7da590 111 //
Owen 0:a51a6e7da590 112 if ( my_nrf24l01p.readable() ) {
Owen 0:a51a6e7da590 113
Owen 0:a51a6e7da590 114 //
Owen 0:a51a6e7da590 115 // ...read the data into the receive buffer
Owen 0:a51a6e7da590 116 //
Owen 0:a51a6e7da590 117 rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
Owen 0:a51a6e7da590 118
Owen 0:a51a6e7da590 119 //
Owen 0:a51a6e7da590 120 // Display the receive buffer contents via the host serial link
Owen 0:a51a6e7da590 121 //
Owen 0:a51a6e7da590 122 for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
Owen 0:a51a6e7da590 123
Owen 0:a51a6e7da590 124 pc.putc( rxData[i] );
Owen 0:a51a6e7da590 125
Owen 0:a51a6e7da590 126 }
Owen 0:a51a6e7da590 127
Owen 0:a51a6e7da590 128 //
Owen 0:a51a6e7da590 129 // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
Owen 0:a51a6e7da590 130 //
Owen 0:a51a6e7da590 131 myled2 = !myled2;
Owen 0:a51a6e7da590 132
Owen 0:a51a6e7da590 133 }
Owen 0:a51a6e7da590 134 }
Owen 0:a51a6e7da590 135 }